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L77DFB25STR063
Part Overview
The L77DFB25STR063 is a 25-position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This panel-mount, through-hole solder-termination connector is designed for signal applications requiring reliable interconnection in industrial and commercial equipment. The product is active and RoHS compliant, with 805 units in stock. Substitute parts address applications requiring alternative flange configurations, different operating temperature ranges, or alternative material compositions while maintaining core connector functionality.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Part Number | L77DFB25STR063 |
| Manufacturer | Amphenol ICC (Commercial Products) |
| Connector Type | Receptacle, Female Sockets |
| Positions | 25 Position (2 Rows) |
| Shell Size / Layout | 3 (DB, B) |
| Mounting Type | Panel Mount, Through Hole |
| Flange Feature | Housing/Shell (Unthreaded) |
| Termination | Solder |
| Current Rating | 7.5A |
| Voltage Rating | 300V |
| Operating Temperature | -55°C ~ 155°C |
| Shell Material / Finish | Steel, Tin Plated |
| Contact Finish | Gold (20.0µin / 0.51µm) |
| Contact Material | Copper Alloy |
| Dielectric Material | Thermoplastic, Glass Filled |
| Flammability Rating | UL94 V-0 |
| RoHS Status | RoHS Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts are grouped based on compatibility of core electrical and mechanical parameters: connector type (receptacle, female sockets), position count (25), shell size (DB/B), mounting type (through-hole), termination method (solder), and contact configuration (signal).
Substitutes vary in the following permitted parameters:
- Flange Feature: Different mounting interface designs (unthreaded, board-side M3/4-40, mating-side 4-40, or combination lock features)
- Shell Material Finish: Steel nickel-plated or unspecified material
- Contact Material: Copper alloy, brass, or phosphor bronze
- Dielectric Material: Thermoplastic glass-filled, polyamide (PA6T/nylon 6T), or polyester
- Current Rating: 5A to 7.5A range
- Voltage Rating: 125V to 300V or unspecified
- Operating Temperature Range: -50°C ~ 100°C to -55°C ~ 155°C
- Compliance Status: RoHS compliant or RoHS non-compliant
- Packaging: Tray, bulk, or tube
All substitute parts maintain 25-position receptacle configuration, female socket contact form, through-hole solder termination, and UL94 V-0 flammability rating.
Parameter Comparison
| Part Number | Manufacturer | Flange Feature | Current Rating (A) | Voltage Rating (V) | Operating Temp (°C) | Shell Finish | Contact Material | Dielectric Material | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|
| L77DFB25STR063 | Amphenol ICC | Housing/Shell (Unthreaded) | 7.5 | 300 | -55 ~ 155 | Steel, Tin Plated | Copper Alloy | Thermoplastic, Glass Filled | RoHS Compliant |
| 172-E25-213R001 | NorComp Inc. | Housing/Shell (Unthreaded) | 5 | — | -50 ~ 100 | Steel, Nickel Plated | Brass | Polyamide (PA6T), Nylon 6T | ROHS3 Compliant |
| 172-E25-213R011 | NorComp Inc. | Board Side (4-40) | 5 | — | -50 ~ 100 | Steel, Nickel Plated | Brass | Polyamide (PA6T), Nylon 6T | ROHS3 Compliant |
| 172-E25-213R031 | NorComp Inc. | Mating Side (4-40) | 5 | — | -50 ~ 100 | Steel, Nickel Plated | Brass | Polyamide (PA6T), Nylon 6T | ROHS3 Compliant |
| 172-E25-213R911 | NorComp Inc. | Board Side (4-40); Mating Side, Female Screwlock (4-40) | 5 | — | -50 ~ 100 | Steel, Nickel Plated | Brass | Polyamide (PA6T), Nylon 6T | ROHS3 Compliant |
| 2-338315-2 | TE Connectivity AMP Connectors | Housing/Shell (M3) | 6 | — | -55 ~ 105 | Steel, Tin Plated | Phosphor Bronze | Polyester, Glass Filled | ROHS3 Compliant |
| 2-747708-0 | TE Connectivity AMP Connectors | Housing/Shell (4-40) | 6 | 125 | -55 ~ 105 | Steel, Tin Plated | Phosphor Bronze | Thermoplastic | RoHS non-compliant |
| 207828-3 | TE Connectivity AMP Connectors | Housing/Shell (Unthreaded) | 6 | 125 | -55 ~ 105 | — | Phosphor Bronze | Polyester | RoHS non-compliant |
| 207828-4 | TE Connectivity AMP Connectors | Housing/Shell (Unthreaded) | 6 | 125 | -55 ~ 105 | — | Phosphor Bronze | Polyester | RoHS non-compliant |
| 5-338315-2 | TE Connectivity AMP Connectors | Housing/Shell (Unthreaded) | 6 | — | -55 ~ 105 | Steel, Tin Plated | Phosphor Bronze | Polyester, Glass Filled | ROHS3 Compliant |
| 5207828-4 | TE Connectivity AMP Connectors | Housing/Shell (Unthreaded) | 6 | 125 | -55 ~ 105 | — | Phosphor Bronze | Polyester | RoHS Compliant |
Engineering Selection Recommendations
For RoHS Compliance Requirements: L77DFB25STR063, 172-E25-213R001, 172-E25-213R011, 172-E25-213R031, 172-E25-213R911, 2-338315-2, 5-338315-2, and 5207828-4 are RoHS compliant. Parts 2-747708-0, 207828-3, and 207828-4 are RoHS non-compliant and unsuitable for applications requiring RoHS certification.
For Extended Temperature Operation: L77DFB25STR063 operates across -55°C ~ 155°C, the widest range among all listed parts. NorComp parts (172-E25 series) limit operation to -50°C ~ 100°C. TE Connectivity parts (2-338315-2, 2-747708-0, 207828-3, 207828-4, 5-338315-2, 5207828-4) operate within -55°C ~ 105°C.
For Current Capacity: L77DFB25STR063 supports 7.5A, the highest rating. NorComp parts are rated 5A. TE Connectivity parts are rated 6A.
For Voltage Specification: L77DFB25STR063 is rated 300V. TE Connectivity parts 2-747708-0, 207828-3, 207828-4, and 5207828-4 are rated 125V. NorComp and TE Connectivity part 2-338315-2 and 5-338315-2 do not specify voltage ratings.
For Flange Configuration: L77DFB25STR063, 172-E25-213R001, 207828-3, 207828-4, 5-338315-2, and 5207828-4 feature unthreaded housing/shell flanges for panel mounting. Part 172-E25-213R011 and 172-E25-213R031 provide board-side or mating-side 4-40 threaded options for different mechanical mounting requirements. Part 2-338315-2 provides M3 threaded housing. Part 2-747708-0 provides 4-40 threaded housing.
Frequently Asked Questions (FAQ)
Q: Can NorComp 172-E25 series parts replace L77DFB25STR063 in all applications? A: The 172-E25 series maintains the same connector type (25-position D-Sub receptacle, female sockets), shell size (DB/B), and mounting method (through-hole solder). However, NorComp parts are limited to 5A current capacity compared to 7.5A for the main part, operate at reduced maximum temperature (100°C versus 155°C), and omit voltage specification. These limits must be evaluated against application requirements.
Q: Are TE Connectivity AMPLIMITE parts electrically compatible with Amphenol L77DFB25STR063? A: TE Connectivity AMPLIMITE parts (2-338315-2, 2-747708-0, 207828-3, 207828-4, 5-338315-2, 5207828-4) are physically and functionally compatible as 25-position D-Sub receptacles with the same shell size and mounting configuration. However, current rating (6A versus 7.5A) and voltage rating specifications differ. Parts 2-747708-0, 207828-3, and 207828-4 are RoHS non-compliant, making them unsuitable for RoHS-regulated applications.
Q: What is the difference between unthreaded and threaded flange options? A: Unthreaded housing/shell flanges (L77DFB25STR063, 172-E25-213R001, 207828-3, 207828-4, 5-338315-2, 5207828-4) provide direct panel mounting with solder attachment. Board-side threaded options (172-E25-213R011, 2-338315-2 with M3, 2-747708-0 with 4-40) allow mechanical fastening to equipment chassis. Mating-side threaded options (172-E25-213R031, 172-E25-213R911) provide additional mechanical coupling points at the connector mating interface.
Q: How do shell material finishes affect connector performance? A: L77DFB25STR063 and TE Connectivity parts use steel with tin plating, providing corrosion resistance suitable for standard industrial environments. NorComp parts use steel with nickel plating, offering alternative surface protection. Both finishes maintain electrical performance; material selection depends on environmental exposure and application-specific corrosion requirements.
Q: Can parts with 5A current rating replace the 7.5A-rated L77DFB25STR063? A: Substitution with 5A-rated parts (NorComp 172-E25 series) is limited to applications operating below 5A. Applications requiring 5A to 7.5A current capacity necessitate parts with equivalent or higher rating: TE Connectivity AMPLIMITE parts (6A) or the original L77DFB25STR063 (7.5A).
Q: What packaging differences exist among substitute parts? A: L77DFB25STR063 is supplied in trays. NorComp parts are supplied in trays. TE Connectivity parts are supplied in bulk or tube packaging. Packaging difference does not affect electrical or mechanical compatibility but may influence procurement quantity minimums and shipping considerations.
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